The coin is still baked into the browser, but it's disabled by default and doesn't really nag you about it.

At least, that's how it was when I used Brave around 2021-2022.

I've long-since moved to Librewolf, but it's my 'plan C' browser if SHTF with firefox and its downstream forks ('plan B' being Ungoogled Chromium)

Brave has a couple crypto features in the UI but that's about it. I'm big on crypto but I don't use any of the browser's crypto features. Just a browser that cuts most of the bullshit out.

Yes.

Only if you enable it?

The problem with the other mainstream browsers is they're embedded with ad-tech nonsense which you can't get rid of.